#include<bits/stdc++.h>
#define lowbit(x) (x&(-x))

using namespace std;

typedef long long ll;
typedef long double LD;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

const ll MOD=1e9+7;
const ll INF=0x3f3f3f3f3f3f3f3f;
const LD eps=1e-9;

void file()
{
	freopen("traverse.in","r",stdin);
	freopen("traverse.out","w",stdout);
	return ;
}

inline ll read()
{
	ll x=0, f=1;
	char c=getchar();
	while(c<'0'||c>'9')
	{
		if(c=='-') f=-1;
		c=getchar();
	}
	while(c>='0'&&c<='9') x=x*10+c-'0', c=getchar();
	return x*f;
}

inline ll qpow(ll x,ll y)
{
	ll res=1;
	while(y)
	{
		if(y&1) res=(res*x)%MOD;
		y>>=1;
		x=(x*x)%MOD;
	}
	return res;
}

ll id, TTT;

const int N=1e5+500;

int last[N], nect[N<<1], to[N<<1];
int xnt=1;
int in[N];
ll siz[N], val[N];
int fa[N];

ll fac[N+500], inv[N+500];

ll res;

bool tag[N];
int n, m;
ll P;

inline void add(int x,int y)
{
	to[++xnt]=y;
	nect[xnt]=last[x];
	last[x]=xnt;
	return ;
}

void iinit()
{
	fac[0]=inv[0]=1;
	for(int i=1;i<=N;i++) fac[i]=(fac[i-1]*i)%MOD;
	for(int i=1;i<=N;i++) inv[i]=qpow(i,MOD-2);
	return ;
}

void init()
{
	memset(last,0,sizeof(last));
	memset(tag,0,sizeof(tag));
	memset(in,0,sizeof(in));
	
	memset(siz,0,sizeof(siz));
	memset(val,0,sizeof(val));
	memset(fa,0,sizeof(fa));
	
	xnt=1;
	res=1;
	
	n=read(), m=read();
	int a, b;
	for(int i=1;i<n;i++)
	{
		a=read(), b=read();
		add(a,b), add(b,a);
		in[a]++, in[b]++;
	}
	for(int i=1;i<=m;i++) tag[read()]=1;
	
	res=1;
	for(int i=1;i<=n;i++)
	{
		res=(res*fac[in[i]-1])%MOD;
	}
	
	P=res;
	res=(res*m)%MOD;
	
	return ;
}

void dfs(int x)
{
	siz[x]=0, val[x]=0;
	int k;
	ll tot=0, d=0;
	bool flag=0;
	for(int i=last[x];i;i=nect[i])
	{
		k=to[i];
		if(k==fa[x])
		{
			if(tag[i/2]) flag=1;
			continue;
		}
		
		fa[k]=x;
		dfs(k);
		
		if(siz[k])
		{
			siz[x]+=siz[k];
			d=(d+(tot*val[k])%MOD*P)%MOD;
			tot=(tot+val[k]*inv[in[x]-1])%MOD;
		}
	}
	
	res=(res-d+MOD)%MOD;
	if(flag)
	{
		res=(res-tot*P)%MOD;
		siz[x]=1;
		val[x]=1;
	}
	else val[x]=tot;
	
	return ;
}

int main()
{
	file();
	
	iinit();
	
	id=read(), TTT=read();
	while(TTT--)
	{
		init();
		fa[1]=0, dfs(1);
		
		res=(res%MOD+MOD)%MOD;
		printf("%lld\n",res);
	}
	return 0;
}